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<title>[19801] trunk: Re-purpose wp_die() for ajax responses.</title>
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<dt>Revision</dt> <dd><a href="http://core.trac.wordpress.org/changeset/19801">19801</a></dd>
<dt>Author</dt> <dd>nacin</dd>
<dt>Date</dt> <dd>2012-01-31 22:12:58 +0000 (Tue, 31 Jan 2012)</dd>
</dl>

<h3>Log Message</h3>
<pre>Re-purpose wp_die() for ajax responses.
 * Allows unit testing of core ajax actions.
 * wp_die() now has separate filters to choose a handler depending on the context (ajax, XML-RPC, else).
 * wp_die) in ajax context does not need to be called with a string. Conversion takes place before die().
props kurtpayne, see <a href="http://core.trac.wordpress.org/ticket/15327">#15327</a>.</pre>

<h3>Modified Paths</h3>
<ul>
<li><a href="#trunkwpincludesclasswpajaxresponsephp">trunk/wp-includes/class-wp-ajax-response.php</a></li>
<li><a href="#trunkwpincludesfunctionsphp">trunk/wp-includes/functions.php</a></li>
<li><a href="#trunkwpincludespluggablephp">trunk/wp-includes/pluggable.php</a></li>
<li><a href="#trunkxmlrpcphp">trunk/xmlrpc.php</a></li>
</ul>

</div>
<div id="patch">
<h3>Diff</h3>
<a id="trunkwpincludesclasswpajaxresponsephp"></a>
<div class="modfile"><h4>Modified: trunk/wp-includes/class-wp-ajax-response.php (19800 => 19801)</h4>
<pre class="diff"><span>
<span class="info">--- trunk/wp-includes/class-wp-ajax-response.php        2012-01-31 19:59:09 UTC (rev 19800)
+++ trunk/wp-includes/class-wp-ajax-response.php        2012-01-31 22:12:58 UTC (rev 19801)
</span><span class="lines">@@ -131,6 +131,6 @@
</span><span class="cx">                 foreach ( (array) $this-&gt;responses as $response )
</span><span class="cx">                         echo $response;
</span><span class="cx">                 echo '&lt;/wp_ajax&gt;';
</span><del>-                die();
</del><ins>+                wp_die();
</ins><span class="cx">         }
</span><span class="cx"> }
</span></span></pre></div>
<a id="trunkwpincludesfunctionsphp"></a>
<div class="modfile"><h4>Modified: trunk/wp-includes/functions.php (19800 => 19801)</h4>
<pre class="diff"><span>
<span class="info">--- trunk/wp-includes/functions.php        2012-01-31 19:59:09 UTC (rev 19800)
+++ trunk/wp-includes/functions.php        2012-01-31 22:12:58 UTC (rev 19801)
</span><span class="lines">@@ -2043,16 +2043,14 @@
</span><span class="cx">  * @param string $title Error title.
</span><span class="cx">  * @param string|array $args Optional arguments to control behavior.
</span><span class="cx">  */
</span><del>-function wp_die( $message, $title = '', $args = array() ) {
</del><ins>+function wp_die( $message = '', $title = '', $args = array() ) {
</ins><span class="cx">         if ( defined( 'DOING_AJAX' ) &amp;&amp; DOING_AJAX )
</span><del>-                die('-1');
</del><ins>+                $function = apply_filters( 'wp_die_ajax_handler', '_ajax_wp_die_handler' );
+        elseif ( defined( 'XMLRPC_REQUEST' ) &amp;&amp; XMLRPC_REQUEST )
+                $function = apply_filters( 'wp_die_xmlrpc_handler', '_xmlrpc_wp_die_handler' );
+        else
+                $function = apply_filters( 'wp_die_handler', '_default_wp_die_handler' );
</ins><span class="cx"> 
</span><del>-        if ( function_exists( 'apply_filters' ) ) {
-                $function = apply_filters( 'wp_die_handler', '_default_wp_die_handler');
-        } else {
-                $function = '_default_wp_die_handler';
-        }
-
</del><span class="cx">         call_user_func( $function, $message, $title, $args );
</span><span class="cx"> }
</span><span class="cx"> 
</span><span class="lines">@@ -2102,7 +2100,7 @@
</span><span class="cx">                 $message .= &quot;\n&lt;p&gt;&lt;a href='javascript:history.back()'&gt;$back_text&lt;/a&gt;&lt;/p&gt;&quot;;
</span><span class="cx">         }
</span><span class="cx"> 
</span><del>-        if ( !function_exists( 'did_action' ) || !did_action( 'admin_head' ) ) :
</del><ins>+        if ( ! did_action( 'admin_head' ) ) :
</ins><span class="cx">                 if ( !headers_sent() ) {
</span><span class="cx">                         status_header( $r['response'] );
</span><span class="cx">                         nocache_headers();
</span><span class="lines">@@ -2206,7 +2204,7 @@
</span><span class="cx">         &lt;/style&gt;
</span><span class="cx"> &lt;/head&gt;
</span><span class="cx"> &lt;body id=&quot;error-page&quot;&gt;
</span><del>-&lt;?php endif; // !function_exists( 'did_action' ) || !did_action( 'admin_head' ) ?&gt;
</del><ins>+&lt;?php endif; // ! did_action( 'admin_head' ) ?&gt;
</ins><span class="cx">         &lt;?php echo $message; ?&gt;
</span><span class="cx"> &lt;/body&gt;
</span><span class="cx"> &lt;/html&gt;
</span><span class="lines">@@ -2240,13 +2238,19 @@
</span><span class="cx"> }
</span><span class="cx"> 
</span><span class="cx"> /**
</span><del>- * Filter to enable special wp_die handler for xmlrpc requests.
</del><ins>+ * Kill WordPress ajax execution.
</ins><span class="cx">  *
</span><del>- * @since 3.2.0
</del><ins>+ * This is the handler for wp_die when processing Ajax requests.
+ *
+ * @since 3.4.0
</ins><span class="cx">  * @access private
</span><ins>+ *
+ * @param string $message Optional. Response to print.
</ins><span class="cx">  */
</span><del>-function _xmlrpc_wp_die_filter() {
-        return '_xmlrpc_wp_die_handler';
</del><ins>+function _ajax_wp_die_handler( $message = '' ) {
+        if ( is_scalar( $message ) )
+                die( (string) $message );
+        die( '0' );
</ins><span class="cx"> }
</span><span class="cx"> 
</span><span class="cx"> /**
</span></span></pre></div>
<a id="trunkwpincludespluggablephp"></a>
<div class="modfile"><h4>Modified: trunk/wp-includes/pluggable.php (19800 => 19801)</h4>
<pre class="diff"><span>
<span class="info">--- trunk/wp-includes/pluggable.php        2012-01-31 19:59:09 UTC (rev 19800)
+++ trunk/wp-includes/pluggable.php        2012-01-31 22:12:58 UTC (rev 19801)
</span><span class="lines">@@ -829,8 +829,12 @@
</span><span class="cx"> 
</span><span class="cx">         $result = wp_verify_nonce( $nonce, $action );
</span><span class="cx"> 
</span><del>-        if ( $die &amp;&amp; false == $result )
-                die('-1');
</del><ins>+        if ( $die &amp;&amp; false == $result ) {
+                if ( defined( 'DOING_AJAX' ) &amp;&amp; DOING_AJAX )
+                        wp_die( -1 );
+                else
+                        die( '-1' );
+        }
</ins><span class="cx"> 
</span><span class="cx">         do_action('check_ajax_referer', $action, $result);
</span><span class="cx"> 
</span></span></pre></div>
<a id="trunkxmlrpcphp"></a>
<div class="modfile"><h4>Modified: trunk/xmlrpc.php (19800 => 19801)</h4>
<pre class="diff"><span>
<span class="info">--- trunk/xmlrpc.php        2012-01-31 19:59:09 UTC (rev 19800)
+++ trunk/xmlrpc.php        2012-01-31 22:12:58 UTC (rev 19801)
</span><span class="lines">@@ -98,9 +98,6 @@
</span><span class="cx"> if ( isset($HTTP_RAW_POST_DATA) )
</span><span class="cx">         logIO(&quot;I&quot;, $HTTP_RAW_POST_DATA);
</span><span class="cx"> 
</span><del>-// Make sure wp_die output is XML
-add_filter( 'wp_die_handler', '_xmlrpc_wp_die_filter' );
-
</del><span class="cx"> // Allow for a plugin to insert a different class to handle requests.
</span><span class="cx"> $wp_xmlrpc_server_class = apply_filters('wp_xmlrpc_server_class', 'wp_xmlrpc_server');
</span><span class="cx"> $wp_xmlrpc_server = new $wp_xmlrpc_server_class;
</span></span></pre>
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